I had a 32GB iPad 2 and it worked fine for me, so when I got the new iPad, I got the 32GB. Sadly, this one seems to be really low on space (5GB left) because I'm using it more. I want to exchange it within my 14 days for a 64GB, but I have a perfect iPad right now, and I'm scared I'll get one with a yellow tint or someone of that sort. What are the chances of this happening, and what can I do if this happens?